Arrows: Digits along an arrow sum to the digit in the attached circle. Arrows do not turn at intersections.
Thermometer: Digits on a thick thermometer must strictly increase from bulb to tip.
Slow Thermometer: Digits on a thin slow thermometer may not decrease from bulb to tip.,
Solution code: Column 5
on 13. October 2025, 10:18 by PierreTombal
Tricky. Initially read over the instructions stating that there were two types of thermos in this puzzle. After finally catching on that one was drawn differently I got my break-in.
on 12. October 2025, 19:09 by wenchang
Great set theory!
| Difficulty: | ![]() |
| Rating: | N/A |
| Solved: | 7 times |
| Observed: | 0 times |
| ID: | 000PNN |
Please note: The German version of this page has changed. It is possible that this page does not contain the latest information.